Table 3.
—Patient and Clinical Characteristics by Diagnostic Yield Per Patient
| Characteristic | No Specific Diagnosis Made (n = 444) | Specific Diagnosis Made (n = 447) | P Value |
| Median age, y | 64.5 | 64 | … |
| Age, y | .81 | ||
| < 65 | 222 (49.4) | 227 (50.6) | |
| ≥ 65 | 222 (50.2) | 220 (49.8) | |
| Sex | .048 | ||
| Female | 202 (46.4) | 233 (53.6) | |
| Male | 242 (53.1) | 214 (46.9) | |
| Ethnicity | .68 | ||
| Non-white | 79 (51.3) | 75 (48.7) | |
| White | 365 (49.5) | 372 (50.5) | |
| ASA score | .57 | ||
| 1 or 2 | 193 (50.9) | 186 (49.1) | |
| 3 or 4 | 251 (49.0) | 261 (51.0) | |
| Zubrod score | .59 | ||
| 0 | 54 (49.1) | 56 (50.9) | |
| 1 | 285 (51.1) | 273 (48.9) | |
| 2-4 | 105 (47.1) | 118 (52.9) | |
| Smoking status | .049 | ||
| Never | 140 (56.5) | 108 (43.5) | |
| Current | 81 (46.8) | 92 (53.2) | |
| Previous | 223 (47.4) | 247 (52.6) | |
| No. of LN sites undergoing biopsy | .019 | ||
| 1 or 2 | 277 (47.0) | 312 (53.0) | |
| 2-6 | 167 (55.3) | 135 (44.7) | |
| Largest LN, cm | < .001 | ||
| ≤ 1 | 125 (65.4) | 66 (34.6) | |
| > 1-2 | 225 (53.4) | 196 (46.6) | |
| > 2-3 | 57 (36.1) | 101 (63.9) | |
| > 3 | 37 (30.6) | 84 (69.4) | |
| Anesthesia | .08 | ||
| Moderate or local | 167 (53.9) | 143 (46.1) | |
| Deep or general | 277 (47.7) | 304 (52.3) | |
| On-site cytologic evaluation | .16 | ||
| No | 114 (54.0) | 97 (46.0) | |
| Yes | 330 (48.5) | 350 (51.5) | |
| Linear EBUS-TBNA biopsy | .044 | ||
| No | 25 (65.8) | 13 (34.2) | |
| Yes | 419 (49.1) | 434 (50.9) | |
| Fellow participation | .81 | ||
| No | 63 (50.8) | 61 (49.2) | |
| Yes | 381 (49.7) | 386 (50.3) | |
| PET scan on LN | < .001 | ||
| Negative | 62 (72.1) | 24 (27.9) | |
| Positive | 125 (42.7) | 168 (57.3) |
Data presented as No. (%) unless otherwise noted. ASA = American Society of Anesthesiologists; LN = lymph node. See Table 1 legend for expansion of other abbreviations.